Nasa's Unexplained Files

4:00 PM to 5:00 PM

Saturday 22 February

Mars's Deepest Secret

Season 4 Episode 8 of 8

An account of how a malfunction on the ISS threatens to poison the crew with a deadly gas, and a startling image taken by a Nasa probe points to evidence of life on Mars

Nasa's Unexplained Files airs on Discovery Science at 4:00 PM, Saturday 22 February. (Subtitles.)

Topics

Education ➝ Science ➝ Factual Topics

Unexplained ➝ Mysteries